This volume consists of an edition of the Arabic translation and commentary on the book of Job by one of the preeminent litterateurs of the Karaite "Golden Age" (10th-11th centuries), Yefet ben ?Eli ha-Levi. Yefet's complete translation and commentary on Job, published for the first time, provides fascinating insight into the history and development of exegetical thought on this book, both among the Karaites as well as the Rabbanites. In preparing this edition, all extant twenty-five manuscripts have been consulted, most of them from the Firkovitch Collection. Their length varies from 1 to 340 folios and in total they contain ca. 2,850 folios.